CNN 2008-01-18（在线收听）

I'm Naamua Delaney at the CNN Center in Atlanta. Here's a look at what's happening NOW IN THE NEWS.

Federal Reserve Chairman Ben Bernanke made a key appearance before a Congressional Committee earlier in Washington. He told lawmakers he supports an economic stimulus package aimed at avoiding a rapid slowdown if it's temporary and quickly implemented. President Bush also backs measures to shore up the economy.

A powerful Democrat in Congress is reportedly ready to endorse Senate Barack Obama 's bid for the White House. Three Democratic sources say Vermont Senator Patrick Leahy will back Obama. Leahy chairs the Senate Judiciary Committee which reviews nominees to the Federal bench and the Supreme Court.

Some scaring moment today at London's Heathrow Airport. A British Airways jet with 152 people on board landed short of the runway, skidding on grass until it reached the tarmac. All the passengers on the flight from Beijing were evacuated on emergency slides. At least three people were treated for minor injuries. The incident caused major delays of the airport.

Police in suburban Atlanta have made a second arrest in yesterday's deadly ambush of two police officers. Investigators are looking for at least one more person. The off-duty officers were gunned down while walking security at an apartment complex in a high crime neighborhood in DeKalb County. The first man was arrested last night. The second suspect was taken into custody this morning. Both are charged with two counts of murder. The police chief is appealing to the public for information about the officers' killings.

O.J. Simpson is out of jail after posting bond early this morning. He had been behind bars since Friday. Simpson was accused of violateing the terms of his bail by trying to contact a co-defendant about the alleged memorabilia heist they face trial for. The judge in Las Vegas doubled Simpson's bail to $ 250,000 and demanded him not to be released until 15% of it was paid. Simpson and two others will be back in court April 7th.

Well, those are the headlines this hour. Stay with CNN for more on these stories and other news of the day.